Include timestamp in formatMessage
Include timestamp in formatMessage

Timestamp used to be included pre 1.0. I'm migrating to the new version and noticed timestamp was missing.
Schmavery/facebook-chat-api,noodle-learns-programming/facebook-chat-api,tpphu/facebook-chat-api,AdamBurgess/facebook-chat-api,ravkr/facebook-chat-api,GAMELASTER/facebook-chat-api